<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<form action="http://127.0.0.1:8000/form" method="post">

    <input type="text" name="id" id="">id
    <input name="username">username
    <input name="gender">性别

    <button>提交</button>
</form>
<img src="http://127.0.0.1:8000/static/img.png" alt="">

</body>
</html>